Calculate the Reynolds numbers at the root chord location for the following aircraft. Assume that the density and dynamic viscosity of air at sea level are 0.002378 slug/ft’ and 3.737 x 107 slug/(ft•s): (a) A DC-3 with a wing root chord length 15.25 ft flying at 250 ft/s at sea level. (b) An F-22 with a wing root chord length 21.5 ft flying at 920 ft/s at sea level.

Calculate the Reynolds numbers at the root chord location for the following aircraft. Assume that the density and dynamic viscosity of air at sea level are 0.002378 slug/ft’ and 3.737 x 107 slug/(ft•s): (a) A DC-3 with a wing root chord length 15.25 ft flying at 250 ft/s at sea level. (b) An F-22 with a wing root chord length 21.5 ft flying at 920 ft/s at sea level.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.

Question

Calculate the Reynolds numbers at the root chord location for the following aircraft.
Assume that the density and dynamic viscosity of air at sea level are 0.002378 slug/ft’ and
3.737 x 107 slug/(ft•s):
(a) A DC-3 with a wing root chord length 15.25 ft flying at 250 ft/s at sea level.
(b) An F-22 with a wing root chord length 21.5 ft flying at 920 ft/s at sea level.

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